Study of joining of carbon/carbon composites for ultra stable structures

Salvo, Milena; Casalegno, Valentina; Vitupier, Yann; Cornillon, Laurence; Pambaguian, Laurent; Ferraris, Monica

doi:10.1016/j.jeurceramsoc.2009.12.013

Cited by 39 publications

(13 citation statements)

References 12 publications

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“…However, up to now the usage of carbon materials has been severely restricted in many applications due to a major difficulty of joining of these structures together, or to other materials such as metals. 6,9,10 The basic techniques which have been used up to now for joining of conventional carbon materials comprised: i) adhesive bonding, 11,12 ii) mechanical joining 12 and iii) brazing. 11,[13][14][15] Each of these techniques has been devised for specific purposes and none of them can fulfil the requirements set for all potential applications.…”

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confidence: 99%

Soldering of Carbon Materials Using Transition Metal Rich Alloys

et al. 2015

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Joining of carbon materials via soldering has not been possible up to now due to lack of wetting of carbons by metals at standard soldering temperatures. This issue has been a severely restricting factor for many potential electrical/electronic and mechanical applications of nanostructured and conventional carbon materials. Here we demonstrate the formation of alloys that enable soldering of these structures. By addition of several percent (2.5-5%) of transition metal such as chromium or nickel to a standard lead-free soldering tin based alloy we obtained a solder that can be applied using a commercial soldering iron at typical soldering temperatures of approximately 350 °C and at ambient conditions. The use of this solder enables the formation of mechanically strong and electrically conductive joints between carbon materials and, when supported by a simple two-step technique, can successfully bond carbon structures to any metal terminal. It has been shown using optical and scanning electron microscope images as well as X-ray diffraction patterns and energy dispersive X-ray mapping that the successful formation of carbon-solder bonds is possible, first, thanks to the uniform nonreactive dispersion of transition metals in the tin-based matrix. Further, during the soldering process, these free elements diffuse into the carbon-alloy border with no formation of brazing-like carbides, which would damage the surface of the carbon materials.

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confidence: 99%

Soldering of Carbon Materials Using Transition Metal Rich Alloys

et al. 2015

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“…Although joining methods for carbon materials have been studied extensively, very few papers have reported on the bonding of C/C composite parts using adhesives in recent years. [3][4][5] The adhesives for such applications must fulfil very stringent requirements, mainly concerning the overall stability of the structure under operative conditions.…”

Section: Introductionmentioning

confidence: 99%

Design, Realization, and Characterization of Advanced Adhesives for Joining Ultra‐Stable C/C Based Components

Casalegno

Ambrois

Corazzari

et al. 2020

Macro Materials & Eng

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The aim of this work is to develop high‐performance adhesives to join carbon fiber reinforced composites (C/C) for use in aerospace applications; in order to guarantee sound mechanical strength, a low coefficient of thermal expansion, and ease of application on large components. Several different adhesive formulations, based on phenolic or cyanate‐ester resins (charged with the maximum experimentally feasible amount of carbon‐based fillers), are developed and tested. The measurements of the lap shear strength at room temperature of the C/C joined by means of one phenolic and one cyanate ester‐based resin demonstrates that these formulations are the most suitable for the given application. A complete characterization, by means of viscosimetry, dilatometry, and thermal gravimetric analysis, coupled with gas analysis by means of mass spectroscopy, confirms that the phenolic‐based formulation is the most promising joining material. A nano‐indenter is used to obtain its Young modulus and hardness, both inside the joint and as a bulk cured adhesive.

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“…Several techniques have been adopted in the past decades on the joining of C/C composites to themselves [6][7][8], and hot-pressing was widely applied to join C/C composites because of its flexible process and strong design ability [9,10]. In our previous work [11], C/C composites have been joined to themselves by hot-pressing using Ti-Ni-Si compound as the interlayer.…”

Section: Introductionmentioning

confidence: 99%